Ingredient review

Ultramarines

INCI: ULTRAMARINES

Ultramarines are safe, vivid mineral pigments widely used in color cosmetics, but they can cause irritation in rare cases for sensitive skin.

beautyskincarecolorant

In plain English

Ultramarines are man-made mineral pigments that give makeup bright blue, violet, or pink colors. They are made from clay, sulfur, and other minerals heated together. In cosmetics, they are used as colorants in products like eyeshadow, blush, and lipstick. They are generally considered safe and non-irritating for most people, but those with very sensitive skin or allergies may want to patch-test first.

Review score

Safety, usefulness, and evidence

4.0Good
4.0/ 5

Potentially useful with some tradeoffs

The evidence base is relatively strong for its common cosmetic role.

Risk flags are low for most users, though the finished product can still irritate.

Source
synthetic
Evidence
strong
Irritation
low
Clogging risk
low
How reviews are scored

Quick decision guide

Useful, but context matters

Ultramarines is generally a lower-concern ingredient when the full formula suits your skin.

Plain-English read

Treat this as a practical screening step before you compare products that contain this ingredient.

  1. Step 1Start with the score, then check the irritation and clogging risk before judging Ultramarines.
  2. Step 2Use the "Best for" and "Use caution if" sections to match the ingredient to your skin, not just to a marketing claim.
  3. Step 3If a product stings, breaks you out, or worsens irritation, judge the finished formula and stop using it even if the ingredient scores well.

Score terms in plain English

Irritation risk

low

Less likely to sting, burn, or bother most users, though sensitive skin can still react.

Clogging risk

low

Less likely to feel heavy or contribute to clogged pores for most skin types.

Evidence level

strong

There is a stronger practical or research basis for the ingredient role described here.

What it is

Ultramarines are synthetic inorganic pigments derived from a complex mixture of sodium, aluminum, silicon, sulfur, and oxygen. They are produced by heating kaolin clay, sulfur, and other raw materials at high temperatures, then grinding and washing the resulting blue or violet powder.

How it works

In a cosmetic product, ultramarines function purely as colorants. They are insoluble in water and oil, so they sit on the skin's surface as fine particles, reflecting and absorbing light to produce their characteristic vivid hues. They do not have any active skincare benefits.

Pros

Vivid, stable color

Ultramarines produce intense blue, violet, and pink shades that are very stable in light and heat, so your makeup stays bright without fading quickly.

Low irritation for most

For the majority of users, ultramarines are non-irritating and non-comedogenic, meaning they won't clog pores or cause breakouts.

Cons and cautions

Potential for sensitivity

A small number of people may experience redness, itching, or stinging when using products with ultramarines, especially if they have very sensitive skin or a sulfur allergy.

Not for all formulas

Ultramarines can be drying in high concentrations in powder products, and loose powders containing them should not be inhaled, so they are not ideal for loose eye shadows.

Best for

  • Anyone looking for bright, bold color in makeup
  • People with normal to oily skin who want long-wearing pigments

Use caution if

  • Individuals with known allergies to ultramarines or sulfur compounds
  • Those with extremely sensitive or reactive skin should patch-test first

Usage tips

Always patch-test a new product containing ultramarines on your inner arm before using it on your face, especially if you have sensitive skin.
Avoid inhaling loose powder products with ultramarines; tap off excess brush powder before applying.
Store ultramarine-containing products away from direct sunlight to preserve color intensity.

Safety summary

Ultramarines are considered safe for cosmetic use by major regulatory bodies when used as intended. Rare allergic reactions or irritation can occur, particularly in sensitive individuals. Inhalation of loose powders should be avoided.

Research notes

Studies and regulatory reviews (FDA, SCCS) confirm that ultramarines are non-toxic, non-sensitizing, and non-phototoxic at typical cosmetic levels. No significant health risks have been identified for topical use.

Common label clues

Typical concentration
0.1% to 10% depending on desired color intensity
Regulatory status
Approved for cosmetic use in the U.S. (FDA) and EU (Annex IV) with restrictions on loose powder forms near eyes due to inhalation risk.
Common uses
Eyeshadows, Blushes, Lipsticks, Nail polishes, Soaps
Environmental note
Ultramarines are synthetic and not biodegradable, but they are not known to be toxic to aquatic life at typical cosmetic concentrations. Disposal should follow local regulations for pigments.

Good to know

  • Ultramarines are approved by the U.S. FDA for use in cosmetics, including eye area products, as long as they are not in loose powder form.
  • The name 'ultramarine' comes from the Latin 'ultramarinus,' meaning 'beyond the sea,' because the original natural pigment was imported from Afghanistan.

Common questions

What is Ultramarines in beauty products?

Ultramarines are man-made mineral pigments that give makeup bright blue, violet, or pink colors. They are made from clay, sulfur, and other minerals heated together. In cosmetics, they are used as colorants in products like eyeshadow, blush, and lipstick. They are generally considered safe and non-irritating for most people, but those with very sensitive skin or allergies may want to patch-test first.

What does Ultramarines do in a beauty product?

In a cosmetic product, ultramarines function purely as colorants. They are insoluble in water and oil, so they sit on the skin's surface as fine particles, reflecting and absorbing light to produce their characteristic vivid hues. They do not have any active skincare benefits.

Is Ultramarines safe for most people?

Ultramarines are considered safe for cosmetic use by major regulatory bodies when used as intended. Rare allergic reactions or irritation can occur, particularly in sensitive individuals. Inhalation of loose powders should be avoided.

Who should be careful with Ultramarines?

Individuals with known allergies to ultramarines or sulfur compounds Those with extremely sensitive or reactive skin should patch-test first

Research sources

FDA Color Additive Status ListOpenSCCS Opinion on UltramarinesOpenCosmetic Ingredient Review (CIR) Safety AssessmentOpen

Ingredient reviews are educational and are not medical advice. Patch test new products and ask a licensed clinician about persistent irritation, allergies, pregnancy-specific questions, or diagnosed skin conditions.